1380028827 has 4 divisors (see below), whose sum is σ = 1840038440. Its totient is φ = 920019216.

The previous prime is 1380028789. The next prime is 1380028967. The reversal of 1380028827 is 7288200831.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1380028827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380008827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230004802 + ... + 230004807.

It is an arithmetic number, because the mean of its divisors is an integer number (460009610).

Almost surely, 2^1380028827 is an apocalyptic number.

1380028827 is a deficient number, since it is larger than the sum of its proper divisors (460009613).

1380028827 is an equidigital number, since it uses as much as digits as its factorization.

1380028827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460009612.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 1380028827 is about 37148.7392383645. The cubic root of 1380028827 is about 1113.3440336759.

The spelling of 1380028827 in words is "one billion, three hundred eighty million, twenty-eight thousand, eight hundred twenty-seven".